The male, female and larva I (uterine) of Gulmargia angustisquama gen. n., sp. n. are described from northern India (Kashmir and Uttar Pradesh). The female is macrolarviparous. Gulmargia and the western Palaearctic Eurychaeta Brauer & Bergenstamm are vicariant sister groups which together form the subfamily Helicoboscinae of the Calliphoridae. Revised definitions of Helicoboscinae and Eurychaeta are provided. The monophyly of all taxa involved is established on the basis of several synapomorphies. It is suggested that the Helicoboscinae is an ancient clade of the Calliphoridae.